Last updated: August 21, 2025
Rethymno, Greece, in May presents a delightful climate for visitors, featuring maximum temperatures reaching up to 35°C (94°F), while the average hovers around a pleasant 19°C (67°F). The warmth is complemented by a refreshing minimum temperature of 10°C (51°F). Despite enjoying predominantly sunny days, May also sees light precipitation, with an average of only 25 mm (1.0 in) over approximately 3 days, ensuring that outdoor activities remain largely uninterrupted. With humidity levels at a comfortable 84%, this month truly embodies the charm of early summer on the picturesque island of Crete.
In May, Rethymno, Greece, welcomes the warmth of spring with temperatures that begin to soar. The month opens with a minimum of 10°C (51°F), making it a delightful time for outdoor activities. As days progress, averages climb to a pleasant 19°C (67°F), while maximum temperatures can reach a sizzling 35°C (94°F), marking a significant leap from the cooler months preceding it. This warm trend not only enhances the charm of Rethymno’s beautiful landscapes but also invites locals and visitors alike to bask in the sun-drenched beaches and vibrant atmosphere. With May showcasing such a comfortable and inviting climate, it's no wonder that this month is a favorite for those seeking to experience the allure of Greek island life.
May marks a transition into the warm and dry months in Rethymno, Greece, with precipitation significantly decreasing to 25 mm (1.0 in), accompanied by only 3 rainy days. This reduction in rainfall follows a pattern established in April and signals the approach of a drier summer. As spring fades, the lush greenery nurtured by the early year's heavier rains gives way to sun-soaked days, setting the stage for June's further drop to just 17 mm (0.7 in). The pleasant weather during May encourages outdoor activities and exploration, making it a delightful time to appreciate Rethymno's stunning landscapes before the summer heat sets in.
In May, Rethymno experiences a notable rise in humidity, reaching 84%, which is the highest level for the year. This increase follows a gradual trend from the previous months, starting at 71% in January and climbing steadily. As spring blooms, the air becomes increasingly moist, paving the way for the warm summer months ahead. While June and July see a slight decrease to 83% and 81%, respectively, the overall pattern demonstrates that Rethymno's late spring offers a lush atmosphere, characterized by vibrant greenery and a welcoming coastal environment. This humidity trend not only enhances the natural beauty of the region but also invites visitors to enjoy the pleasant, albeit humid, Mediterranean climate.
As spring transitions into summer, the UV Index in Rethymno, Greece climbs dramatically, reflecting an upward trend in sun exposure. In May, the UV Index reaches 10, categorizing it as very high, with a burn time of just 15 minutes. This increase from 9 in April serves as a clear indication that sun protection is more crucial than ever. Following May, the Index peaks at 11 in June, where caution is vital. Overall, as temperatures rise and the days lengthen, visitors and locals alike are reminded to be vigilant about sun safety. For more details on daily UV levels, check out Rethymno UV Index.
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As spring transitions into summer, Rethymno, Greece, basks in an increasing abundance of sunshine, with May standing out as a radiant highlight, boasting an impressive 398 hours of sunlight. This surge reflects a delightful trend: as the months progress, days grow longer and brighter, peaking in June with 408 hours. Visitors in May can enjoy the warm, sun-kissed days and mild evenings, ideal for exploring the charming old town or relaxing on beautiful beaches. The gradual decline in sunshine hours through the summer months, with August at 395 hours, serves as a gentle reminder of the approaching autumn, yet even as the brightness wanes, the allure of Rethymno remains irresistible, basking in sunshine that far exceeds winter’s scarce offerings.
As May unfolds in Rethymno, Greece, the likelihood of basking in sunny weather soars to an impressive 80%. This marks a significant leap from the preceding months, with April offering a modest 55% chance of sunshine, and a noticeable contrast to the winter months, where January and February struggle with just 39% and 60% respectively. The increasing trend of sunny days continues into the summer, as June rises to 91% and reaches a peak in July with 96%. Thus, May serves as a delightful precursor to the summer, providing a splendid opportunity for outdoor adventures and soaking up the Mediterranean sun, before the peak season fully takes hold.
In Rethymno, Greece, the progression of daylight hours throughout the year reveals a captivating rhythm of nature. Starting off in January and February with a consistent 10 hours, the days gradually lengthen as spring approaches. March brings a slight increase to 11 hours, and by April, the sunshine expands to a delightful 13 hours, hinting at the arrival of warmer weather. May marks a significant shift, with daylight stretching to 14 hours, a duration that is maintained through June and July, perfect for outdoor adventures and enjoying the Mediterranean landscape. As August wanes, daylight begins to taper off at 13 hours, transitioning to 12 hours in September and gradually retreating to 11 hours in October. The cycle continues as winter returns, bringing shorter days of 10 hours in November, dwindling to 9 hours in December. This pattern not only enhances Rethymno’s charm but also invites residents and visitors alike to embrace the enriching experiences that each season brings.
In Rethymno, Greece, May ushers in a gentle breeze, with an average wind speed of 2.1 m/s (5 mph), slightly softer than the preceding months. This trend reflects a gradual decrease in wind intensity as spring transitions into summer, with April's winds at 2.6 m/s (6 mph). As the days grow warmer, a noticeable shift occurs, with wind speeds tapering off before picking back up in the hotter months of July and August, where they reach 2.9 m/s (6 mph) and 2.6 m/s (6 mph) respectively. The overall seasonal pattern highlights May as a tranquil yet inviting month, perfect for enjoying the picturesque landscapes of Rethymno, where the winds cradle the vibrant coastal scenery.
Weather in Rethymno varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Rethymno, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present strikingly different weather conditions, reflecting the transition from spring to winter. In May, temperatures range from a mild 10°C (51°F) at night to a warm 35°C (94°F) during the day, with an average of 19°C (67°F). The month sees relatively low precipitation at 25 mm (1.0 in) over just three days, contributing to high humidity levels of 84%. In contrast, January is much colder, with temperatures starting at a frigid -2°C (29°F) and peaking at 21°C (70°F), yielding an average of only 10°C (50°F). This month is notably wetter, with precipitation totaling 89 mm (3.5 in) spread across 15 days, resulting in a humidity level of 71%. For more detailed information, check out Rethymno weather in January.
In comparing the weather between May and February, May offers significantly warmer temperatures, with an average of 19°C (67°F) and a maximum reaching up to 35°C (94°F), while February's temperatures are considerably cooler, averaging 11°C (52°F) and peaking at 19°C (66°F). Additionally, February experiences much higher precipitation, totaling 86 mm (3.4 in) over approximately 10 days, whereas May sees only 25 mm (1.0 in) of rain across just 3 days. Humidity levels also differ slightly, with May at 84% compared to February's 72%. For more details on February's climate, you can check Rethymno weather in February.
In comparing the weather of May and March, May experiences significantly warmer temperatures, with a minimum of 10°C and an average of 19°C, compared to March's lower range of 2°C and an average of 12°C. The maximum temperature in May can reach up to 35°C, while March peaks at 22°C. Additionally, May has much less precipitation, with only 25 mm over about 3 days, whereas March sees a higher total of 67 mm of rainfall spread over 9 days. Despite May's higher humidity levels at 84%, March's humidity remains relatively comfortable at 74%. For more details on the weather in March, you can check Rethymno weather in March.
In comparing the weather of May and April, we observe a noticeable increase in temperatures. May boasts a minimum of 10°C (51°F) and an average of 19°C (67°F), reaching up to a maximum of 35°C (94°F), making it significantly warmer than April, which has a minimum of 6°C (43°F), an average of 15°C (58°F), and a maximum of 26°C (79°F). While April experiences slightly more precipitation—32 mm (1.3 in) over five days compared to May's 25 mm (1.0 in) over just three days—the humidity remains fairly high in both months, with May at 84% and April at 78%. For a detailed look at April's weather, check out Rethymno weather in April.
May and June exhibit distinct yet somewhat overlapping weather patterns. In May, temperatures range from a cooler minimum of 10°C (51°F) to a warm average of 19°C (67°F), peaking at a high of 35°C (94°F). The month experiences moderate precipitation totaling 25 mm (1.0 in) over three days, accompanied by a high humidity level of 84%. In contrast, June sees a rise in average temperatures, with a minimum of 13°C (56°F) and an average of 23°C (73°F), while the maximum temperature is slightly lower at 31°C (89°F). Precipitation in June decreases to 17 mm (0.7 in) over the same number of days, and humidity remains relatively stable at 83%. Overall, June tends to be warmer and drier compared to May. For more detailed insights into June weather, you can visit Rethymno weather in June.
May and July present distinct weather patterns, reflecting the transition from spring to the height of summer. In May, temperatures range from a mild 10°C (51°F) at night to a warm 35°C (94°F) during the day, with an average of 19°C (67°F). The month experiences about 25 mm (1.0 in) of precipitation over three days, accompanied by a high humidity level of 84%. In contrast, July offers warmer nights with a minimum of 18°C (65°F) and daytime highs averaging 34°C (94°F), but with a more stable climate—only 8 mm (0.3 in) of rain over just one day and slightly lower humidity at 81%. For a closer look at what to expect during July, check out Rethymno weather in July.
In comparing the weather between May and August, it's clear that August is generally warmer and drier. May experiences a broader temperature range, with nighttime lows averaging 10°C (51°F) and daytime highs reaching up to 35°C (94°F). In contrast, August sees higher minimum temperatures, averaging 20°C (68°F) and maximums around 34°C (93°F). Precipitation is also notably different; May receives about 25 mm (1.0 in) over three days, whereas August has minimal rainfall of just 3 mm (0.1 in) on one day. Additionally, humidity is slightly higher in May at 84%, compared to 78% in August. For more details, check out Rethymno weather in August.
May and September exhibit distinct weather characteristics that reflect the transition from spring to autumn. In May, temperatures range from a cool 10°C to a warm 35°C, with an average of 19°C. The humidity is relatively high at 84%, contributing to a more tropical feel, while precipitation is modest at 25 mm over just three days. In contrast, September offers a milder climate with minimum temperatures around 16°C and an average of 23°C, peaking at 31°C. The humidity decreases to 74%, making the atmosphere feel more comfortable. Precipitation remains consistent at 25 mm over three days as well. For a detailed look at September weather specifics, check out Rethymno weather in September.
May and October both feature mild average temperatures around 19°C (67°F), but their overall weather patterns differ significantly. In May, temperatures range from a cooler 10°C (51°F) at night to a warm 35°C (94°F) during the day, with low precipitation of just 25 mm (1.0 in) over only 3 days and higher humidity at 84%. In contrast, October sees a slight increase in nighttime temperatures, with a minimum of 11°C (53°F), and a decrease in maximum temperatures to 31°C (89°F). However, it experiences more rainfall, accumulating 45 mm (1.8 in) over 8 days, and the humidity is more comfortable at 73%. For more detailed insights on October weather, check out Rethymno weather in October.
May and November showcase distinct weather patterns. In May, temperatures range from a minimum of 10°C (51°F) to a maximum of 35°C (94°F), with an average of 19°C (67°F), making it feel warm and pleasant, although it has higher humidity at 84%. Precipitation is relatively low, averaging only 25 mm (1.0 in) over about 3 days. In contrast, November boasts cooler temperatures with a minimum of 8°C (47°F), an average of 16°C (61°F), and a maximum of 25°C (77°F). However, it experiences significantly more rainfall, totaling 90 mm (3.6 in) over about 12 days, and lower humidity at 71%. For more detailed information, check out Rethymno weather in November.
May and December present contrasting weather patterns. In May, temperatures are warmer, with a minimum of 10°C (51°F) and an average of 19°C (67°F), peaking at a warm 35°C (94°F). The precipitation is modest at 25 mm (1.0 in) over just 3 days, accompanied by high humidity levels of 84%. In contrast, December features cooler temperatures, with a minimum of 4°C (40°F) and an average of 12°C (54°F), reaching a maximum of 19°C (66°F). December is also much wetter, recording 115 mm (4.5 in) of rainfall spread over 15 days, though with lower humidity at 71%. For more specific details about December weather, check out Rethymno weather in December.
As May unfolds in Rethymno, it marks a delightful transition from the cooler spring months to the warmth of summer. With temperatures rising significantly, this month brings a perfect blend of comfortable warmth and rare precipitation, characterized by only a few light rain days. The average temperature feels pleasantly mild, making it an ideal time to explore the stunning landscapes and vibrant culture of the area. Humidity remains noticeable but is offset by the delightful breezes typical of early summer. For more on what to expect throughout the year, check out the full details on Rethymno Climate.